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논문 기본 정보

자료유형
학술저널
저자정보
양호형 (평택대학교 생활 및 산업환경R&D센터) 김형주 (건국대학교) 방성원 (주식회사 가든포유) 조흔우 ((주)에어콕) 김호현 (평택대학교)
저널정보
한국환경보건학회 한국환경보건학회지 한국환경보건학회지 제47권 제5호
발행연도
2021.10
수록면
410 - 424 (15page)
DOI
10.5668/JEHS.2021.47.5.410

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Background: Subway stations have the characteristics of being located underground and are a representative public-use facility used by an unspecified number of people. As concerns about indoor air quality (IAQ) increase, various management measures are being implemented. However, there are few systematic studies and cases of long-term continuous measurement of underground station air quality. Objectives: The purpose of this study is to analyze changes and factors influencing IAQ in subway stations through real-time continuous long-term measurement using IoT-based IAQ sensing equipment, and to evaluate the IAQ improvement effect of a bio-filter system. Methods: The IAQ of a subway station in Seoul was measured using IoT-based sensing equipment. A bio- filter system was installed after collecting the background concentrations for about five months. Based on the data collected over about 21 months, changes in indoor air quality and influencing factors were analyzed and the reduction effect of the bio-filter system was evaluated. Results: As a result of the analysis, PM10, PM2.5, and CO2 increased during rush hour according to the change in the number of passengers, and PM10 and PM2.5 concentrations were high when a PM warning/watch was issued. There was an effect of improving IAQ with the installation of the bio-filter system. The reduction rate of a new-bio-filter system with improved efficiency was higher than that of the existing bio-filter system. Factors affecting PM2.5 in the subway station were the outdoor PM2.5, platform PM2.5, and the number of passengers. Conclusions: The IAQ in a subway station is affected by passengers, ventilation through the air supply and exhaust, and the spread of particulate matter generated by train operation. Based on these results, it is expected that IAQ can be efficiently improved if a bio-filter system with improved efficiency is developed in consideration of the factors affecting IAQ and proper placement.

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